Theorie des Magnetismus

Terminänderung:

die Vorlesungen finden Dienstags um 15:45 Uhr (Raum 6/1)
und Freitags um 14:00 Uhr (Kl. HS. B) statt!

Vorlesungsinhalt:

1. Basics

1.1 Macroscopic electrodynamics
1.2 Bohr-van Leeuwen Theorem
1.3 Sources of magnetic fields
1.4 Magnetic moments of electrons and nuclei
1.5 Ground state of free magnetic ions
1.6 Spin-orbit interaction
1.7 Zeeman effect
1.8 Interactions between neclei and electrons
1.9 Mössbauer effect

2. Magnetic ions in crystals

2.1 Ionic crystals and metals
2.2 Crystal fields
2.3 Symmetry properties of atomic states
2.4 Jahn-Teller effect

3. Spin Hamiltonians

3.1 Exchange interactions
3.2 Ising model
3.3 Heisenberg model
3.4 Spin-wave theory of ferromagnets
3.5 Spin-wave theory of antiferromagnets
3.6 Valence bond states
3.7 Exact solutions in one dimension
3.8 Critical phenomena
3.9 Kosterlitz-Thouless transition

4. Magnetism of metals

4.1 Magnetic susceptibility of free electrons
4.2 The Stoner model
4.3 The Hubbard model
4.4 Spin density waves
4.5 Local moments in metals
4.6 Faraday effect
4.7 Field-theoretic approaches to itinerant magnetism
4.8 Numerical approaches to itinerant magnetism

5. Mott insulators

5.1 Mott transition
5.2 Hubbard subbands
5.3 Mott-Hubbard transition
5.4 Dynamical mean-field theory

6. Novel phenomena and unconventional systems

6.1 Multilayer systems
6.2 Giant magnetoresistance
6.3 Spin torque
6.4 Anomalous Hall effect
6.5 Spin Hall effect
6.6 Spin liquids
6.7 Frustrated magnets